One of the fundamental puzzles we face today is the dark matter (the dunkle materie, as called by the Swiss physicist Fritz Zwicky back in 1933) in the universe. It is highly abundant (almost five times more than all the objects put together…

The CMS collaboration is happy to congratulate its members Dr. Austin Ball and Professor Phil Butler who not only made significant contributions to science but are also highly honoured in their respective countries for their achievements.  Dr.…

The installation of a new prototype of  CMS muon chambers was completed last December. With these installations, the CMS detector is taking further steps towards the HL-LHC era at CERN.  With the future High Luminosity Large Hadron…

The word lepton comes from the Greek λεπτός (leptós,) meaning “small”;  the electrically charged leptons (electrons, muons, and taus) have much smaller masses than their counterparts in the quark sector. For example, the tau particle is the…

Before saying goodbye to 2021, we’re proud to look back at major milestones reached by CMS collaboration both on physics results and detector upgrades along the year. It is impossible to mention all the achievements on various fronts; what we…

Since the Higgs boson discovery in 2012 by the CMS and the ATLAS collaborations, the interaction of the Higgs boson with other fundamental particles as well as with itself are studied with ever-increasing precision to pin down the nature of this new…

The collision of high-energy protons at the LHC breaks them apart and allows us to look at its constituents. Surely there are more interesting stuff in store, compared to the usual constituents at lower energy, the up and the down type quarks.…

As the experiments at the Large Hadron Collider (LHC) brace for the start of Run 3 of the accelerator’s programme in 2022, the CMS collaboration has released a new batch of research-quality open data recorded by the CMS detector in 2015, the first…

  During the CERN pilot beams at the end of October, for the first time CMS has reconstructed online the LHC collision data with Graphic Processing Units (GPUs). At CMS, the High Level Trigger (HLT) is responsible for analysing in…

The Higgs boson is peculiar in many respects. Like most other elementary particles, it is unstable and lives only for an extremely short time, 1.6 x 10-22 seconds, according to the established theory of particle physics (the standard model). Pretty…

As the end of Long Shutdown 2 (LS2) is getting closer, CERN along with the experiments at the Large Hadron Collider (LHC) is preparing to welcome the most awaited Run 3 next year. The CMS experiment geared up for the two weeks of CERN pilot beams in…

CERN’s most ambitious emergency response exercise to date took place on 13 November at LHC Point 5, with the involvement of French, Swiss and CERNois safety and rescue teams   It is a peaceful Saturday morning in Cessy, France. Thick autumn…